endorsement vs auspices

endorsement and auspices both are nouns.

Word	Noun	Adjective	Verb	Adverb
endorsement	Yes	No	No	No
auspices	Yes	No	No	No

As nouns, auspices is a hyponym of endorsement; that is, auspices is a word with a more specific, narrower meaning than endorsement:

Other hyponyms of endorsement include aegis, protection.

endorsement (noun)	auspices (noun)
the act of endorsing	kindly endorsement and guidance
formal and explicit approval
a promotional statement (as found on the dust jackets of books)
a speech seconding a motion
a signature that validates something